4. Endorphins:
The chemical that masks pain and is often called the runner’s high. Endorphins are released with time spent with people, playing games with people, singing together, making music together, dancing together, exercising together and laughing together. Certain foods also release endorphins: dark chocolate, meat with tryptophan (turkey, chicken, lean meats, fish), yogurt, sauerkraut, kimchi, beans, eggs, almonds, and spicy foods. Bananas are known as the happy fruit.